#include <47func.h>
int main(int argc, char *argv[])
{
    char str[] = "cd 123 456";
    printf("out = %s\n",strtok(str," "));
    printf("out = %s\n",strtok(NULL," "));
    printf("out = %s\n",strtok(NULL," "));
    printf("out = %p\n",strtok(NULL," "));
    return 0;
}

